Authors
Julia Cooke, Michelle R Leishman
Publication date
2016/8
Source
Functional Ecology
Volume
30
Issue
8
Pages
1340-1357
Description
  1. Hundreds of single species studies have demonstrated the facility of silicon (Si) to alleviate diverse abiotic stresses in plants. Understanding of the mechanisms of Si‐mediated stress alleviation is progressing, and several reviews have brought information together. A quantitative assessment of the alleviative capacity of Si, however, which could elucidate plant Si function more broadly, was lacking.
  2. We combined the results of 145 experiments, predominantly on agricultural species, in a meta‐analysis to statistically assess the responses of stressed plants to Si supply across multiple plant families and abiotic stresses. We interrogated our database to determine whether stressed plants increased in dry mass and net assimilation rate, oxidative stress markers were reduced, antioxidant responses were increased and whether element uptake showed consistent changes when supplied with Si.
  3. We demonstrated that …
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